Home / 20,404,719,124.20-30,607,078,686.30-19,242,457,657.20

Finding the Fourth Proportional to 20,404,719,124.20, 30,607,078,686.30 and 19,242,457,657.20

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Solution

The fourth proportional to 20,404,719,124.20, 30,607,078,686.30 and 19,242,457,657.20 is: 28,863,686,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404,719,124.20 : 30,607,078,686.30 = 19,242,457,657.20 : x
  2. Step 2: Convert to fraction form
    20,404,719,124.20/30,607,078,686.30 = 19,242,457,657.20/x
  3. Step 3: Cross multiply
    20,404,719,124.20x = 30,607,078,686.30 × 19,242,457,657.20
  4. Step 4: Simplify right side
    20,404,719,124.20x = 588,955,415,631,716,352,000
  5. Step 5: Solve for x
    x = 588,955,415,631,716,352,000/20,404,719,124.20
  6. Step 6: Final answer
    x = 28,863,686,485.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.